Age and Sex in Boulder, Jefferson County, Montana (Census County Division)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the county subdivisions in Jefferson County.
Scope: population of Jefferson County, Boulder, and other county subdivisions in Jefferson County
Boulder
Jefferson County
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%2.0%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-41171.441%1.44%1101.355%1.35%2222.734%2.73%3374.150%4.15%3053.756%3.76%2563.153%3.15%5236.441%6.44%2653.264%3.26%7509.236%9.24%6928.522%8.52%5777.106%7.11%5246.453%6.45%3994.914%4.91%4054.988%4.99%2973.658%3.66%1672.057%2.06%320.394%0.39%931.145%1.15%1792.204%2.20%4105.049%5.05%6958.559%8.56%4034.963%4.96%3624.458%4.46%
Count number of people in age cohort
% age cohort as a percentage of the total population
1normalized with respect to the number of years in each interval

Age and Sex#2

Percentage in each age cohort per year of age.1
Scope: population of Jefferson County and Boulder
Female Male
Jefferson County
Boulder
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.218254%-0.243753%-0.218254%0.22%0.218254%0.024288%0.243753%0.027536%0.242542%0.24%1,34716.589%16.6%-0.801970%-0.798897%-0.801970%0.80%0.801970%0.036946%0.798897%0.052064%0.838916%0.84%3,33141.022%41.0%-0.419403%-0.028736%-0.424772%-0.448139%0.45%0.419403%0.424772%0.003831%0.419403%0.42%1,26815.616%15.6%-0.354064%-0.474097%-0.006465%-0.354064%0.35%0.354064%0.227833%0.474097%0.581897%0.58%3043.744%3.74%-0.626026%-0.573705%-0.626026%0.63%0.626026%0.027367%0.573705%0.021071%0.653394%0.65%1,87023.030%23.0%
Count number of people in age cohort
% age cohort as a percentage of the total population
1normalized with respect to the number of years in each interval 265+ 340-64 422-39 518-21 60-17

Detailed Age and Sex#3

Percentage in each age cohort per year of age.1
Scope: population of Jefferson County and Boulder
Female Male
Jefferson County
Boulder
Shaded bar tips show excess over facing bar.
1.0%0.5%0.0%0.5%1.0%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.027709%-0.036635%-0.027709%0.03%0.027709%0.034637%0.036635%0.009697%0.062346%0.06%1171.441%1.44%-0.128079%-0.146539%-0.037928%-0.128079%0.13%0.128079%0.014778%0.146539%0.142857%0.14%1101.355%1.35%-0.258621%-0.029557%-0.275838%-0.017240%-0.288177%0.29%0.258621%0.275838%0.258621%0.26%2222.734%2.73%-0.364532%-0.460305%-0.364532%0.36%0.364532%0.100985%0.460305%0.065512%0.465517%0.47%3374.150%4.15%-0.533662%-0.649369%-0.533662%0.53%0.533662%0.184729%0.649369%0.204005%0.718391%0.72%3053.756%3.76%-0.621921%-0.332512%-0.775795%-0.954433%0.95%0.621921%0.775795%0.086199%0.621921%0.62%2563.153%3.15%-0.972906%-0.948194%-0.972906%0.97%0.972906%0.201149%0.948194%0.264345%1.174056%1.17%5236.441%6.44%-0.769704%-0.706836%-0.769704%0.77%0.769704%0.092365%0.706836%0.155159%0.862069%0.86%2653.264%3.26%-0.918719%-0.009852%-0.884407%-0.187915%-0.928571%0.93%0.918719%0.884407%0.918719%0.92%7509.236%9.24%-0.849754%-0.004926%-0.805103%-0.043100%-0.854680%0.85%0.849754%0.805103%0.849754%0.85%6928.522%8.52%-0.669951%-0.081281%-0.701664%-0.751232%0.75%0.669951%0.701664%0.079304%0.669951%0.67%5777.106%7.11%-0.583744%-0.520645%-0.583744%0.58%0.583744%0.123153%0.520645%0.191363%0.706897%0.71%5246.453%6.45%-0.423645%-0.135468%-0.389622%-0.134471%-0.559113%0.56%0.423645%0.389622%0.423645%0.42%3994.914%4.91%-0.482759%-0.422377%-0.482759%0.48%0.482759%0.032020%0.422377%0.044824%0.514778%0.51%4054.988%4.99%-0.334975%-0.061576%-0.384450%-0.396552%0.40%0.334975%0.384450%0.015516%0.334975%0.33%2973.658%3.66%-0.291461%-0.330431%-0.291461%0.29%0.291461%0.102627%0.330431%0.146539%0.394089%0.39%1672.057%2.06%-0.000000%-0.215499%0.000000%0.00%0.000000%0.394089%0.215499%0.060340%0.394089%0.39%320.394%0.39%-0.554187%-0.036946%-0.430997%-0.129299%-0.591133%0.59%0.554187%0.430997%0.554187%0.55%931.145%1.15%-0.412562%-0.573226%-0.412562%0.41%0.412562%0.277094%0.573226%0.021550%0.689655%0.69%1792.204%2.20%-0.784072%-0.114943%-0.804528%-0.899015%0.90%0.784072%0.804528%0.000000%0.784072%0.78%4105.049%5.05%-0.805419%-0.675804%-0.805419%0.81%0.805419%0.100985%0.675804%0.055168%0.906404%0.91%6958.559%8.56%-0.482759%-0.027094%-0.465477%-0.509852%0.51%0.482759%0.465477%0.063788%0.482759%0.48%4034.963%4.96%-0.399015%-0.398242%-0.043100%-0.399015%0.40%0.399015%0.093596%0.398242%0.492611%0.49%3624.458%4.46%
Count number of people in age cohort
% age cohort as a percentage of the total population
1normalized with respect to the number of years in each interval

Detailed Sex Ratio#4

Percentage more males or females in selected age cohorts.
Scope: population of Jefferson County and Boulder
More Females More Males
Jefferson County
Boulder
50%0%50%100%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-242018-1915-1710-145-90-4125.000000%26.470588%125.000000%125.0%2.2502.2530.769%30.8%69.231%69.2%-25.882353%11.538462%11.538462%11.5%1.1151.1247.273%47.3%52.727%52.7%-11.428571%-6.250000%-11.428571%11.4%0.8970.9052.703%52.7%47.297%47.3%27.702703%14.232210%27.702703%27.7%1.2771.2843.917%43.9%56.083%56.1%34.615385%31.415929%34.615385%34.6%1.3461.3542.623%42.6%57.377%57.4%-53.465347%-53.465347%53.5%11.111111%0.6520.6560.547%60.5%39.453%39.5%20.675105%27.878788%20.675105%20.7%1.2071.2145.315%45.3%54.685%54.7%12.000000%21.951220%12.000000%12.0%1.1201.1247.170%47.2%52.830%52.8%-1.072386%-21.247563%-1.072386%1.1%0.9890.9950.267%50.3%49.733%49.7%-0.579710%-5.353319%-0.579710%0.6%0.9940.9950.145%50.1%49.855%49.9%-12.132353%-12.132353%12.1%11.302211%0.8920.8952.860%52.9%47.140%47.1%21.097046%36.754967%21.097046%21.1%1.2111.2145.229%45.2%54.771%54.8%-31.976744%-34.513274%-31.976744%32.0%0.7580.7656.892%56.9%43.108%43.1%6.632653%10.612245%6.632653%6.6%1.0661.0748.395%48.4%51.605%51.6%-18.382353%-18.382353%18.4%4.035874%0.8450.8454.209%54.2%45.791%45.8%35.211268%44.347826%35.211268%35.2%1.3521.3542.515%42.5%57.485%57.5%-6.666667%-30.000000%-6.666667%6.7%0.9380.9451.613%51.6%48.387%48.4%67.164179%3.759398%67.164179%67.2%1.6721.6737.430%37.4%62.570%62.6%-14.659686%0.000000%-14.659686%14.7%0.8720.8753.415%53.4%46.585%46.6%12.538226%8.163265%12.538226%12.5%1.1251.1347.050%47.1%52.950%52.9%-5.612245%-5.612245%5.6%13.703704%0.9470.9551.365%51.4%48.635%48.6%-10.822511%23.456790%23.456790%23.5%1.2351.2344.751%44.8%55.249%55.2%
M:F ratio of males to females in the age cohort
F females as a percentage of the age cohort
M males as a percentage of the age cohort

Map of Age Cohorts by Tract in Boulder

Children Age Cohorts by Tract#5

Percentage of population aged 0 to 17 (%):
20.8%21.7%22.7%23.6%24.5%25.4%

College Age Cohorts by Tract#6

Percentage of population aged 18 to 21 (%):
2.95%3.26%3.57%3.87%4.17%4.48%

20s Age Cohorts by Tract#7

Percentage of population aged 22 to 29 (%):
4.43%4.93%5.43%5.92%6.41%6.91%

30s Age Cohorts by Tract#8

Percentage of population aged 30 to 39 (%):
9.00%9.35%9.70%10.04%10.39%10.74%

40s Age Cohorts by Tract#9

Percentage of population aged 40 to 49 (%):
11.5%12.4%13.2%14.0%14.9%15.8%

50s Age Cohorts by Tract#10

Percentage of population aged 50 to 59 (%):
16.80%17.20%17.60%17.99%18.38%18.78%

60s Age Cohorts by Tract#11

Percentage of population aged 60 to 69 (%):
16.14%16.33%16.51%16.69%16.87%17.05%

70s Age Cohorts by Tract#12

Percentage of population aged 70 to 79 (%):
5.3%6.0%6.5%7.1%7.7%8.3%

80+ Age Cohorts by Tract#13

Percentage of population aged 80 and older (%):
2.19%2.43%2.66%2.89%3.12%3.36%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Block Group in Boulder

Children Age Cohorts by Block Group#14

Percentage of population aged 0 to 17 (%):
16.9%19.1%21.2%23.4%25.6%27.8%

College Age Cohorts by Block Group#15

Percentage of population aged 18 to 21 (%):
1.6%2.7%3.7%4.8%5.8%6.9%

20s Age Cohorts by Block Group#16

Percentage of population aged 22 to 29 (%):
2.5%4.8%7.1%9.3%11.6%13.9%

30s Age Cohorts by Block Group#17

Percentage of population aged 30 to 39 (%):
4.4%6.2%7.9%9.6%11.3%13.0%

40s Age Cohorts by Block Group#18

Percentage of population aged 40 to 49 (%):
7.7%9.7%11.7%13.7%15.7%17.7%

50s Age Cohorts by Block Group#19

Percentage of population aged 50 to 59 (%):
13.0%14.5%16.0%17.5%18.9%20.5%

60s Age Cohorts by Block Group#20

Percentage of population aged 60 to 69 (%):
11.8%14.1%16.4%18.7%21.1%23.4%

70s Age Cohorts by Block Group#21

Percentage of population aged 70 to 79 (%):
3.6%5.3%7.0%8.6%10.3%12.0%

80+ Age Cohorts by Block Group#22

Percentage of population aged 80 and older (%):
0.8%3.3%5.8%8.3%10.7%13.2%
Road Data ©OpenStreetMap

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Age Cohorts by Neighborhood in Boulder

There is 1 neighborhood that are fully or partially contained within Boulder (0 fully and 1 partially). This section compares all 1 of those to each other, Boulder, and other entities that contain or substantially overlap with Boulder.

Children by Neighborhood#23

Percentage of population aged 0 to 17 (%):
Scope: population of Boulder, selected neighborhoods in Boulder, and entities that contain Boulder
0%5%10%15%20%Count#MountainWestUnited States of AmericaUnited StatesBoulderMontanaHelena Metro AreaHelena AreaJefferson CountyJeffersonSoutheast NeighborhoodSoutheast24.709269%24.709269%24.7%5,732,5615.73M23.760486%23.760486%23.8%17,834,66617.8M23.108006%23.108006%23.1%73,612,43873.6M23.029557%23.029557%23.0%1,87021.987686%21.987686%22.0%225,020225k21.723160%21.723160%21.7%16,85516.9k21.032670%21.032670%21.0%2,44015.925301%15.925301%15.9%7587591
Count number of children
# rank of neighborhood out of 1 by %

Age Cohorts by County Subdivision in the Helena Area

There are 6 county subdivisions in the Helena Area. This section compares Boulder to all of the county subdivisions in the Helena Area and to those entities that contain or substantially overlap with Boulder.

Children by County Subdivision#32

Percentage of population aged 0 to 17 (%):
Scope: population of Boulder, selected other county subdivisions in the Helena Area, and entities that contain Boulder
0%5%10%15%20%25%Count#LincolnMountainWestUnited States of AmericaUnited StatesBoulderMontanaHelena Metro AreaHelena AreaHelenaJefferson CountyJeffersonWolf CreekWhitehallAugusta25.449871%25.449871%25.4%1,584124.709269%24.709269%24.7%5,732,5615.73M23.760486%23.760486%23.8%17,834,66617.8M23.108006%23.108006%23.1%73,612,43873.6M23.029557%23.029557%23.0%1,870221.987686%21.987686%22.0%225,020225k21.723160%21.723160%21.7%16,85516.9k21.704920%21.704920%21.7%12,30312.3k321.032670%21.032670%21.0%2,44018.907563%18.907563%18.9%450416.374605%16.374605%16.4%570511.111111%11.111111%11.1%786
Count number of children
# rank of county subdivision out of 6 by %

Age Cohorts by County Subdivision in Montana

There are 194 county subdivisions in Montana. This section compares Boulder to the 50 most populous county subdivisions in Montana and to those entities that contain or substantially overlap with Boulder. The least populous of the compared county subdivisions has a population of 3,655.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of Boulder, selected other county subdivisions in Montana, and entities that contain Boulder
0%10%20%30%Count#Crow ReservationCut BankFort Peck ReservationFort Peck Reserva…HardinBlackfeet ReservationBlackfeet Reservat…BelgradeShepherdFlathead ReservationNorthwest YellowstoneNW YellowstoneColumbusManhattanLincolnHavreKalispellMountainLaurelGallatin GatewayKalispell NorthwestKalispell NWSidneyWestFrenchtown-WyeBillingsUnited States of AmericaUnited StatesSouth YellowstoneS YellowstoneBoulderGlasgowConradColumbia FallsCreston-BigforkGreat FallsGlendiveStevensvilleMontanaHuntley ProjectHelena Metro AreaHelena AreaHelenaLewistownMiles CityLoloEurekaJefferson CountyJeffersonHamiltonThompson Falls-West EndThompson Falls-W …Bad Rock-Columbia HeightsBad Rock-Columbi…ButteLakeside-SomersShelbyDillonLivingstonMissoulaWhitefishLibbyBozemanAnacondaRed LodgeDeer Lodge33.794764%33.794764%33.8%2,246133.597811%33.597811%33.6%1,228232.715330%32.715330%32.7%3,088332.169269%32.169269%32.2%1,566431.016150%31.016150%31.0%3,092527.101008%27.101008%27.1%6,772627.047038%27.047038%27.0%1,242726.041747%26.041747%26.0%6,787826.020408%26.020408%26.0%2,091925.781626%25.781626%25.8%1,0721025.649553%25.649553%25.6%1,2341125.449871%25.449871%25.4%1,5841225.162031%25.162031%25.2%3,0671324.899838%24.899838%24.9%10,44110.4k1424.709269%24.709269%24.7%5,732,5615.73M24.644863%24.644863%24.6%4,4761524.627588%24.627588%24.6%1,2731624.046046%24.046046%24.0%1,1281723.981271%23.981271%24.0%1,8951823.760486%23.760486%23.8%17,834,66617.8M23.668639%23.668639%23.7%1,6801923.160383%23.160383%23.2%26,06426.1k2023.108006%23.108006%23.1%73,612,43873.6M23.062115%23.062115%23.1%1,7972123.029557%23.029557%23.0%1,8702222.976055%22.976055%23.0%1,2092322.804817%22.804817%22.8%9092422.598334%22.598334%22.6%2,1432522.488693%22.488693%22.5%2,1382622.487257%22.487257%22.5%15,83815.8k2722.435134%22.435134%22.4%1,8852822.419101%22.419101%22.4%3,2772921.987686%21.987686%22.0%225,020225k21.863613%21.863613%21.9%8403021.723160%21.723160%21.7%16,85516.9k21.704920%21.704920%21.7%12,30312.3k3121.698113%21.698113%21.7%2,0013221.689540%21.689540%21.7%2,3393321.530084%21.530084%21.5%3,2423421.376518%21.376518%21.4%1,3203521.032670%21.032670%21.0%2,44020.446312%20.446312%20.4%4,2333620.286358%20.286358%20.3%1,2613720.200602%20.200602%20.2%1,0073819.999404%19.999404%20.0%6,7113919.952494%19.952494%20.0%1,0924019.721067%19.721067%19.7%8064119.477172%19.477172%19.5%1,5874218.935476%18.935476%18.9%2,3804318.721635%18.721635%18.7%16,21216.2k4418.709336%18.709336%18.7%2,4734518.404588%18.404588%18.4%1,7654616.753237%16.753237%16.8%9,2894716.490513%16.490513%16.5%1,2954816.359387%16.359387%16.4%6304913.239075%13.239075%13.2%72150
Count number of children
# rank of county subdivision out of 50 by %

Age Cohorts by County Subdivision in the West

There are 1,950 county subdivisions in the West. This section compares Boulder to the 50 most populous county subdivisions in the West and to those entities that contain or substantially overlap with Boulder. The least populous of the compared county subdivisions has a population of 323,012.

Children by County Subdivision#50

Percentage of population aged 0 to 17 (%):
Scope: population of Boulder, selected other county subdivisions in the West, and entities that contain Boulder
0%10%20%30%Count#BakersfieldVictorville-HesperiaSouth Gate-East Los AngelesS Gate-E Los Ang…San BernardinoChandlerFresnoStocktonSalt Lake CitySalt Lk CityModestoComptonRiversideSouth AuroraInglewoodDowney-NorwalkPhoenixMountainOntarioBoise CityAnaheim-Santa Ana-Garden GroveAnaheim-Santa An…Beaverton-HillsboroSacramentoLong Beach-LakewoodLong Bch-LakewoodLas VegasEwaWestOceanside-EscondidoOceanside-Escond…San MateoWhittierColorado SpringsColorado SpgsUnited States of AmericaUnited StatesAlbuquerqueBoulderSan JoseEast San Gabriel ValleyE San Gabriel VlyFremontUpper San Gabriel ValleyUpper San Gabriel …Seattle EastTacomaSpokaneHaywardMontanaSan DiegoCentral Contra CostaCntrl Contra CostaHelena Metro AreaHelena AreaSan Fernando ValleySan Fernando VlyTucsonJefferson CountyJeffersonNortheast JeffersonNE JeffersonLos AngelesDenverOaklandNorth CoastPortland EastSouthwest San Gabriel ValleySW San Gabriel VlySeattleHonoluluSan Francisco30.255492%30.255492%30.3%124,377124k129.435174%29.435174%29.4%111,612112k229.165936%29.165936%29.2%146,441146k328.994345%28.994345%29.0%243,195243k428.984100%28.984100%29.0%121,788122k528.397448%28.397448%28.4%196,566197k628.302745%28.302745%28.3%99,59099.6k727.496527%27.496527%27.5%270,755271k827.298986%27.298986%27.3%88,17988.2k927.269923%27.269923%27.3%95,47895.5k1025.927237%25.927237%25.9%123,053123k1125.535072%25.535072%25.5%98,09498.1k1225.154719%25.154719%25.2%94,09594.1k1325.088958%25.088958%25.1%105,268105k1424.820142%24.820142%24.8%790,766791k1524.709269%24.709269%24.7%5,732,5615.73M24.651051%24.651051%24.7%158,701159k1624.573713%24.573713%24.6%83,11183.1k1724.485581%24.485581%24.5%415,583416k1824.260613%24.260613%24.3%104,522105k1924.105398%24.105398%24.1%270,060270k2024.003737%24.003737%24.0%138,756139k2123.974603%23.974603%24.0%448,315448k2223.870694%23.870694%23.9%81,44881.4k2323.760486%23.760486%23.8%17,834,66617.8M23.555887%23.555887%23.6%155,230155k2423.297112%23.297112%23.3%94,14294.1k2523.292335%23.292335%23.3%75,73275.7k2623.163415%23.163415%23.2%91,42691.4k2723.108006%23.108006%23.1%73,612,43873.6M23.033158%23.033158%23.0%147,927148k2823.029557%23.029557%23.0%1,87022.866327%22.866327%22.9%401,701402k2922.814001%22.814001%22.8%218,249218k3022.761568%22.761568%22.8%78,49678.5k3122.722312%22.722312%22.7%75,16775.2k3222.721955%22.721955%22.7%133,247133k3322.639000%22.639000%22.6%100,255100k3422.471811%22.471811%22.5%81,45281.5k3522.418273%22.418273%22.4%86,88086.9k3621.987686%21.987686%22.0%225,020225k21.982996%21.982996%22.0%523,203523k3721.890089%21.890089%21.9%108,396108k3821.723160%21.723160%21.7%16,85516.9k21.633042%21.633042%21.6%398,263398k3921.517750%21.517750%21.5%188,032188k4021.032670%21.032670%21.0%2,44020.944454%20.944454%20.9%98,64098.6k4120.884750%20.884750%20.9%537,723538k4220.705017%20.705017%20.7%137,337137k4320.278714%20.278714%20.3%88,08188.1k4419.605378%19.605378%19.6%74,22474.2k4519.507968%19.507968%19.5%96,00396.0k4619.084224%19.084224%19.1%61,84361.8k4717.999155%17.999155%18.0%187,875188k4817.885770%17.885770%17.9%71,80671.8k4913.481174%13.481174%13.5%114,628115k50
Count number of children
# rank of county subdivision out of 50 by %

Age Cohorts by County Subdivision in the United States

There are 35,600 county subdivisions in the United States. This section compares Boulder to the 50 most populous county subdivisions in the United States and to those entities that contain or substantially overlap with Boulder. The least populous of the compared county subdivisions has a population of 547,300.

Children by County Subdivision#59

Percentage of population aged 0 to 17 (%):
Scope: population of Boulder, selected other county subdivisions in the United States, and entities that contain Boulder
0%10%20%Count#San BernardinoSouthwest DallasSW DallasNorthwest HarrisNW HarrisFresnoFort WorthSalt Lake CitySalt Lk CityNortheast TarrantNE TarrantHoustonMilwaukeeSan Antonio CentralSan Antonio CntrlEl PasoNortheast DallasNE DallasBronxPlanoTulsaDetroitPhoenixMountainOntarioTownship 1:Charlotte1, CharlotteAnaheim-Santa Ana-Garden GroveAnaheim-Santa An…SacramentoLong Beach-LakewoodLong Bch-LakewoodLas VegasWestOceanside-EscondidoOceanside-Escond…BrooklynUnited States of AmericaUnited StatesAlbuquerqueBoulderSan JoseEast San Gabriel ValleyE San Gabriel VlySeattle EastColumbusTown of HempsteadHempsteadOrlandoPhiladelphiaMontanaSan DiegoChicagoHelena Metro AreaHelena AreaTampaAustinSan Fernando ValleySan Fernando VlyTucsonBaltimoreJefferson CountyJeffersonLos AngelesDenverQueensAtlantaMiamiSeattleWashingtonBostonManhattanSan Francisco28.994345%28.994345%29.0%243,195243k128.849273%28.849273%28.8%278,686279k228.832103%28.832103%28.8%215,729216k328.397448%28.397448%28.4%196,566197k427.641788%27.641788%27.6%235,492235k527.496527%27.496527%27.5%270,755271k626.987978%26.987978%27.0%154,609155k726.725236%26.725236%26.7%882,854883k826.475933%26.475933%26.5%158,504159k926.202297%26.202297%26.2%183,823184k1026.125729%26.125729%26.1%143,291143k1125.730246%25.730246%25.7%398,059398k1225.573137%25.573137%25.6%367,431367k1325.541202%25.541202%25.5%139,787140k1425.334430%25.334430%25.3%150,050150k1525.218343%25.218343%25.2%172,353172k1624.820142%24.820142%24.8%790,766791k1724.709269%24.709269%24.7%5,732,5615.73M24.651051%24.651051%24.7%158,701159k1824.540635%24.540635%24.5%198,493198k1924.485581%24.485581%24.5%415,583416k2024.105398%24.105398%24.1%270,060270k2124.003737%24.003737%24.0%138,756139k2223.974603%23.974603%24.0%448,315448k2323.760486%23.760486%23.8%17,834,66617.8M23.555887%23.555887%23.6%155,230155k2423.337305%23.337305%23.3%608,369608k2523.108006%23.108006%23.1%73,612,43873.6M23.033158%23.033158%23.0%147,927148k2623.029557%23.029557%23.0%1,87022.866327%22.866327%22.9%401,701402k2722.814001%22.814001%22.8%218,249218k2822.721955%22.721955%22.7%133,247133k2922.597144%22.597144%22.6%185,081185k3022.467309%22.467309%22.5%172,708173k3122.237882%22.237882%22.2%129,541130k3222.168125%22.168125%22.2%345,809346k3321.987686%21.987686%22.0%225,020225k21.982996%21.982996%22.0%523,203523k3421.913385%21.913385%21.9%594,733595k3521.723160%21.723160%21.7%16,85516.9k21.700117%21.700117%21.7%144,592145k3621.692326%21.692326%21.7%186,313186k3721.633042%21.633042%21.6%398,263398k3821.517750%21.517750%21.5%188,032188k3921.123671%21.123671%21.1%131,178131k4021.032670%21.032670%21.0%2,44020.884750%20.884750%20.9%537,723538k4120.705017%20.705017%20.7%137,337137k4220.470812%20.470812%20.5%472,878473k4319.876571%19.876571%19.9%115,302115k4419.544858%19.544858%19.5%188,182188k4517.999155%17.999155%18.0%187,875188k4617.402645%17.402645%17.4%114,685115k4716.549062%16.549062%16.5%108,939109k4814.639548%14.639548%14.6%239,355239k4913.481174%13.481174%13.5%114,628115k50
Count number of children
# rank of county subdivision out of 50 by %

Definitions

The US Census reports extensively on the topics of age and sex, often reporting other topics broken down by age and sex cohorts. This page reports on age and sex alone; charts presenting other topics by age and sex can be found on their topic-specific pages.

  • Children: less than 18 years old
  • College: from 18 to 21 years old
  • 20s: from 22 to 29 years old, to not overlap the college category
  • Younger Adult: from 22 to 39 years old
  • Older Adult: from 40 to 64 years old
  • Senior: more than 64 years old

For additional information about the data presented on this site, including our sources, please see the About Page.

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State:
Montana
County:
Jefferson
Metro Area:
Helena Area
City:
Boulder
Unincorporated Places:
Basin, Clancy, Elkhorn, Jefferson City, Montana City, South Hills
ZIP Codes:
59601, 59631, 59632, 59634, 59635, 59638, 59701, 59711
Elementary School Districts:
Basin, Boulder, Cardwell, Clancy, Montana City, Whitehall
Secondary School Districts:
Jefferson, Whitehall
Neighborhood:
Southeast
Congressional District:
MT-At Large
State Senate District:
MT-38
State House District:
MT-75